This is the mail archive of the
mailing list for the GCC project.
Re: birthpoints in rtl.
- From: Diego Novillo <dnovillo at google dot com>
- To: Paolo Bonzini <bonzini at gnu dot org>
- Cc: Steven Bosscher <stevenb dot gcc at gmail dot com>, Kenneth Zadeck <zadeck at naturalbridge dot com>, gcc <gcc at gcc dot gnu dot org>, "Park, Seongbae" <seongbae dot park at gmail dot com>, Ian Lance Taylor <iant at google dot com>, Richard Sandiford <rsandifo at nildram dot co dot uk>
- Date: Sat, 01 Mar 2008 08:52:52 -0500
- Subject: Re: birthpoints in rtl.
- References: <47C5EF2A.email@example.com> <47C6B132.firstname.lastname@example.org> <47C88C6B.email@example.com> <firstname.lastname@example.org> <47C89EC3.email@example.com> <47C95F2B.firstname.lastname@example.org>
On 3/1/08 8:50 AM, Paolo Bonzini wrote:
Yes, that's what I meant by "no subscripts" (see also my other message
re. birthpoints). Instead of subscripting variables you have multiple
defs for each variable. End each def is obviously assigned only once,
and each use in the IL stream except for phis has only one reaching def.
Ah, sure, the subscripts in this case become a notational convenience.
The DF objects are all linked in the web.